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Bluetooth problem with OSX Yosemite: Magic Mouse and Keyboard

Hello everyone,


I've a problem on my MacBook Pro with Retina Display 13" (late 2013).

I've always used it plugged with an external monitor (I love double screen), magic mouse and bluetooth keyboard. On Mavericks everything was perfect with this setup.

Yesterday I installed OSX Yosemite and I've found a boring problem: my Magic Mouse and my Bluetooth Keyboard have a 0.5 second of latency, lag. This happen when the Macbook is not plugged with battery charger. When he is on charge, the problem don't exist.


I noticed this bug also on the public beta of this summer and submit the feedback.

I hoped that they fixed this before release but the bug is still here.


How can i solve this boring problem?

MacBook Pro (Retina, 13-inch, Late 2013), OS X Mavericks (10.9)

Posted on Oct 18, 2014 7:03 AM

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Posted on Oct 18, 2014 1:04 PM

I also reported this issue again and again during each beta release.


This makes the MacBook basically unusable in battery power for doing any kind of design and coding work.


I don't have any bluetooth addons or third party utilities. I also tried clearing PRAMs, and reinstalling Yosemite, to no avail.


Here are some threads about the issue, which, I'm noticing, is common.



Note that while the issue is kind of tolerable using the mouse, it's tragic with the keyboard.


Does this prevent you from using OS X Yosemite?

The issue makes it very difficult for me to use OS X Yosemite


For the report, here are the issues I submitted about this using the feedback assistant:

#116709, #128648, #129129

#132546, #391247

437 replies

Jan 6, 2015 10:58 AM in response to O00Dany00O

The worst thing is periodically when my new black Mac Pro wakes up to the unlock or login screen and my Apple Bluetooth keyboard CANNOT enter the password no matter how many times I try! It's either disconnected or stuck on key-repeat. And you can't toggle WiFi or anything else from that screen.


I then have no choice but to hot-unplug some USB device and go find a USB keyboard from another Mac to plug in and enter my password. Or force-shutdown and maybe lose work.


Anyway, it just occured to me: I don't recall if anyone here tested 2.4GHz vs. 5GHz WiFi. (They probably did, but I skimmed past it.) Bluetooth is 2.4, and so is most WiFi, but if all your devices (and your base station) support 802.11n, you can try 5GHz. I'm just about to do that! Hopefully I won't find any of my machines can't connect over 5GHz. I'll post my findings after a while.


The weird thing is, my Bluetooth troubles simply vanished last week. For about 7 days, Yosemite WiFi and Bluetooth got along great! Then the problem returned.

Jan 6, 2015 11:01 AM in response to Morgan Adams1

Well I kind of did that - I "disabled" all 2.4 GHz Wifi by assigning it a unique SSID (and eventually not even broadcasting it) so that no devices can connect. No 2.4 GHz devices that I am aware of are now connected. Have replaced all old IPhones and IPads by recent ones.


Did all the rest, too (see previous posts I made about this).


Problem persists.

Jan 6, 2015 11:05 AM in response to JimLosAltos

Never have my hopes been dashed so quickly!


One tiny silver lining: if 5GHz affects 2.4GHz WiFi, that's one more clue to suggest it's not any kind of hardware interference flaw. (Ditto for the fact that laptops and Mac Pros alike have similar issues, and that is seems to be new or worse with Yosemite.) In which case, it's software-fixable by Apple.

Jan 6, 2015 11:09 AM in response to Morgan Adams1

As I said earlier in the discussion, that's likely the case. I remember I did an update on 10.9 late summer and at that point experienced these problems already. I had attributed them to a new and cheap USB 3.0 hub I had bought at the same time I did that, but they persisted without that, too. So from my point of view, this indicates that in some update, Apple already anticipated changes around the Bluetooth stack to happen in Yosemite, and rolled them out as part of the update procedure.


I have no other reports from people with similar experiences, so this may be a coincidence - yet the symptoms were exactly the same.

Bluetooth problem with OSX Yosemite: Magic Mouse and Keyboard

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